It is not probable that any trainings of art can give these endowments to him who has not received them from the gift of nature. The subtle network of the brain, or whatever else it is, that makes a man more fit for, and more qualified to succeed in, one occupation than another, can scarcely be followed up and detected either in the living subject or the dead one. But, as in the infinite variety of human beings no two faces are so alike that they cannot be distinguished, nor even two leaves plucked from the same tree(2), so it may reasonably be presumed, that there are varieties in the senses, the organs, and the internal structure of the human species, however delicate, and to the touch of the bystander evanescent, which may give to each individual a predisposition to rise to a supreme degree of excellence in some certain art or attainment, over a million of competitors. (2) Papers between Clarke and Leibnitz, p. 95. It has been said that all these distinctions and anticipations are idle, because man is born without innate ideas. Whatever is the incomprehensible and inexplicable power, which we call nature, to which he is indebted for his formation, it is groundless to suppose, that that power is cognisant of, and guides itself in its operations by, the infinite divisibleness of human pursuits in civilised society. A child is not designed by his original formation to be a manufacturer of shoes, for he may be born among a people by whom shoes are not worn, and still less is he destined by his structure to be a metaphysician, an astronomer, or a lawyer, a rope-dancer, a fortune-teller, or a juggler. It is true that we cannot suppose nature to be guided in her operations by the infinite divisibleness of human pursuits in civilised society. But it is not the less true that one man is by his structure best fitted to excel in some one in particular of these multifarious pursuits, however fortuitously his individual structure and that pursuit may be brought into contact. Thus a certain calmness and steadiness of purpose, much flexibility, and a very accurate proportion of the various limbs of the body, are of great advantage in rope-dancing; while lightness of the fingers, and a readiness to direct our thoughts to the rapid execution of a purpose, joined with a steadiness of countenance adapted to what is figuratively called throwing dust in the eyes of the bystander, are of the utmost importance to the juggler: and so of the rest. It is as much the temper of the individual, as any particular subtlety of organ or capacity, that prepares him to excel in one pursuit rather than a thousand others. And he must have been a very inattentive observer of the indications of temper in an infant in the first months of his existence, who does not confess that there are various peculiarities in that respect which the child brings into the world with him.